| Business | Phone |
| Hosiden America Corp 120 E State Pkwy, Schaumburg 60173 | (847) 885-8870 |
| Nichicon America Corp 927 E State Pkwy, Schaumburg 60173 | (847) 843-7501 |
| Omron Electronics Llc 1 Commerce Dr, Schaumburg 60173 | (847) 843-7900 |
| St Microelectronics 1375 E Woodfield Rd 400, Schaumburg 60173 | (847) 585-3000 |
| Thermotron Industries 830 E Higgins Rd, Schaumburg 60173 | (847) 517-7710 |
| L V Tech Inc 918 Albion Ave, Schaumburg 60193 | (847) 301-1493 |
| Naranjo Electronics 904 S Roselle Rd 340, Schaumburg 60193 | (847) 985-1314 |
| Schaumburg Security Svc Inc 1937 Wright Blvd, Schaumburg 60193 | (847) 584-9000 |
| Toolmex Corp Motor Div 2015 Mitchell Blvd, Schaumburg 60193 | (847) 524-9995 |
| Accurate Circuits 870 E Higgins Rd, Schaumburg 60173 | (847) 330-9001 |
| Inet Dbr 1206 Remington Rd, Schaumburg 60173 | (847) 781-8005 |
| Oriental Motor Usa Corp 1555 Basswood Rd, Schaumburg 60173 | (847) 285-5100 |
| Super Staging & Lighting 1261 Wiley Rd, Schaumburg 60173 | (847) 584-0350 |
| Universal Lighting Technology 635 Remington Rd, Schaumburg 60173 | (847) 884-9330 |
| J S Circuitecture Schaumburg 60193 | (847) 891-8020 |
| Maloney Electric Supply Corp 1721 Wright Blvd, Schaumburg 60193 | (847) 891-6400 |
| Master Cut Edm Inc 1025 Lunt Ave C, Schaumburg 60193 | (847) 534-0343 |
| Romeo Security Inc 219 Kendrick Ct, Schaumburg 60194 | (847) 805-1500 |